YARA · SEKOIA.IO Community
SEKOIA_Tool_Edrsandblast_Kernelcallbacks
Detects EDRSandblast KernelCallbacks strings
- Author
- Sekoia.io
- Date
- 2024-11-25
- Modified
- 2024-12-19
- Score / Quality
- 75 / 80
What this rule detects
Detects EDRSandblast KernelCallbacks strings
Targets: Windows PE.
It defines 3 patterns (3 text, 0 hex, 0 regex).
Summary generated from the rule's metadata and condition.
Rule source
tool-edrsandblast-kernelcallbacks.yarDetection Rule License 1.1
rule SEKOIA_Tool_Edrsandblast_Kernelcallbacks : FILE
{
meta:
= "Detects EDRSandblast KernelCallbacks strings"
= "Sekoia.io"
= "74cf4444-5bd6-4167-930a-5dbf2e529f92"
= "2024-11-25"
= "2024-12-19"
= "https://github.com/SEKOIA-IO/Community"
= "https://github.com/SEKOIA-IO/Community/blob/a438a5901a211c2abdf75da9c93921ef187473d1/yara_rules/tool_edrsandblast_kernelcallbacks.yar#L1-L19"
= "https://github.com/SEKOIA-IO/Community/blob/a438a5901a211c2abdf75da9c93921ef187473d1/LICENSE.md"
= "ffb1185dca42c5b2b273c3a48f3ba86204a3474a9a045f72dbdb0ba7c9e89c7d"
= 75
= 80
= "FILE"
= "1.0"
= "TLP:CLEAR"
strings:
$ = "[+] '%s' service ACL configured to for Everyone" wide
$ = "%s callback of EDR driver \"%s\" [callback addr: 0x%I64x" wide
$ = "[!] Could not resolve %s kernel module's address" wide
condition:
uint16be( 0 ) == 0x4d5a and filesize < 3MB and 3 of them
}
Strings (3 patterns)
| Identifier | Type | Value | Modifiers |
|---|---|---|---|
| $ | text | "[+] '%s' service ACL configured to for Everyone" | wide |
| $ | text | "%s callback of EDR driver \"%s\" [callback addr: 0x%I64x" | wide |
| $ | text | "[!] Could not resolve %s kernel module's address" | wide |
Condition
uint16be( 0 ) == 0x4d5a and filesize < 3MB and 3 of themIn plain words (Heuristic)
- The file must start with “MZ” — a Windows executable (PE).
- The file must be smaller than 3MB (a cheap guard that skips large files).
- At least 3 patterns in the rule must match.
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References
Licence & attribution
Author: Sekoia.io
Source repository: SEKOIA.IO Community @ a438a5901a
Licence: Detection Rule License 1.1 (repository licence)
Mirrored via YARA Forge 20260927, which prefixes rule names with the source and adds normalised meta fields.
Rule id: 74cf4444-5bd6-4167-930a-5dbf2e529f92
Metadata
| version | 1.0 |
|---|---|
| classification | TLP:CLEAR |
Tags:FILE
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